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有机-无机复合载体茂锆催化剂的制备及乙烯聚合 被引量:5

SYNTHESIS OF ORGANIC-INORGANIC HYBRID SUPPORTED ZIRCONOCENE CATALYST AND ITS CATALYSIS ON ETHYLENE POLYMERIZATION
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摘要 合成了组成为聚(4-乙烯基吡啶)-硅胶(SAV)的有机-无机复合载体茂锆催化剂,并用固体13C-NMR谱、元素分析(EA)、光电子能谱(XPS)等方法进行了表征.发现由SAV负载的茂锆催化剂可在相对较低的甲基铝氧烷(Al/Zr=600)用量下聚合乙烯.其活性(1.12×103kg PE/mol Zr.h)远高于SiO2负载的茂锆催化剂(0.22×103kg PE/mol Zr.h). Organic-inorganic hybrid (SAV) supported zirconocene was synthesized and its catalysis on ethylene polymerization was examined. The SAV was synthesized by copolymerization of 4-vinylpyridine with vinyl silica monomer (SA),which was modified by reacting silica with allyhrimethoxysilane (APS). After treated by MAO, the SAV was reacted with Cp2ZrCl2 to form organic-inorganic hybrid supported metallocene. The chemical structure and the composition of SA and SAV have been characterized by solid-state 13 C-NMR, XPS, and elemental analysis (EA). The SAV supported zirconocene catalyst was effective in ethylene polymerization at a relatively low MAO level (Al/Zr = 600) giving higher activity than that supported by SiO2.
出处 《高分子学报》 SCIE CAS CSCD 北大核心 2006年第6期800-803,共4页 Acta Polymerica Sinica
关键词 复合载体 茂金属催化剂 乙烯聚合 聚乙烯 Organic-inorganic hybrid, Zirconocene, Ethylene polymerization, Polyethylene
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